An 'optic' nerve injury may result in all of the following except (AIIMS Nov 2013)
|A||Loss of vision in that eye|
|B||Dilatation of pupil|
|D||Loss of light reflex|
1. Ptosis is 'dropping' of the upper eyelid, due to paralysis or defective development of levator palpebrae superioris muscle.
2. Sometimes it may occur due to deformity and increased weight of the lid brought about by trachoma or tumors, or from lack of support in phthisis bulbi or enophthalmos. Levator palpebrae superioris muscle is supplied by oculomotor nerve.